Benjamin Bouvier
47 lines
1.8 KiB
SQL
47 lines
1.8 KiB
SQL
CREATE TABLE "linked_chunks" (
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-- Identifier of the chunk, unique per room. Corresponds to a `ChunkIdentifier`.
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"id" INTEGER,
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-- Which room does this chunk belong to? (hashed key shared with the two other tables)
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"room_id" BLOB NOT NULL,
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-- Previous chunk in the linked list. Corresponds to a `ChunkIdentifier`.
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"previous" INTEGER,
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-- Next chunk in the linked list. Corresponds to a `ChunkIdentifier`.
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"next" INTEGER,
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-- Type of underlying entries: E for events, G for gaps
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"type" TEXT CHECK("type" IN ('E', 'G')) NOT NULL
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);
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CREATE UNIQUE INDEX "linked_chunks_id_and_room_id" ON linked_chunks (id, room_id);
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CREATE TABLE "gaps" (
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-- Which chunk does this gap refer to? Corresponds to a `ChunkIdentifier`.
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"chunk_id" INTEGER NOT NULL,
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-- Which room does this event belong to? (hashed key shared with linked_chunks)
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"room_id" BLOB NOT NULL,
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-- The previous batch token of a gap (encrypted value).
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"prev_token" BLOB NOT NULL,
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-- If the owning chunk gets deleted, delete the entry too.
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FOREIGN KEY(chunk_id, room_id) REFERENCES linked_chunks(id, room_id) ON DELETE CASCADE
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);
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-- Items for an event chunk.
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CREATE TABLE "events" (
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-- Which chunk does this event refer to? Corresponds to a `ChunkIdentifier`.
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"chunk_id" INTEGER NOT NULL,
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-- Which room does this event belong to? (hashed key shared with linked_chunks)
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"room_id" BLOB NOT NULL,
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-- `OwnedEventId` for events, can be null if malformed.
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"event_id" TEXT,
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-- JSON serialized `TimelineEvent` (encrypted value).
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"content" BLOB NOT NULL,
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-- Position (index) in the chunk.
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"position" INTEGER NOT NULL,
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-- If the owning chunk gets deleted, delete the entry too.
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FOREIGN KEY(chunk_id, room_id) REFERENCES linked_chunks(id, room_id) ON DELETE CASCADE
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);
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